Titus 3:9-11

New Revised Standard Version, Anglicised

⁹ But avoid stupid controversies, genealogies, dissensions, and quarrels about the law, for they are unprofitable and worthless. ¹⁰ After a first and second admonition, have nothing more to do with anyone who causes divisions, ¹¹ since you know that such a person is perverted and sinful, being self-condemned.